1331400532731 has 32 divisors (see below), whose sum is σ = 1887098653440. Its totient is φ = 832583061504.

The previous prime is 1331400532699. The next prime is 1331400532733. The reversal of 1331400532731 is 1372350041331.

It is a happy number.

It is not a de Polignac number, because 1331400532731 - 2⁵ = 1331400532699 is a prime.

It is a super-2 number, since 2×1331400532731² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331400532692 and 1331400532701.

It is not an unprimeable number, because it can be changed into a prime (1331400532733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11610331 + ... + 11724443.

It is an arithmetic number, because the mean of its divisors is an integer number (58971832920).

Almost surely, 2^{1331400532731} is an apocalyptic number.

1331400532731 is a deficient number, since it is larger than the sum of its proper divisors (555698120709).

1331400532731 is a wasteful number, since it uses less digits than its factorization.

1331400532731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116155.

The product of its (nonzero) digits is 22680, while the sum is 33.

The spelling of 1331400532731 in words is "one trillion, three hundred thirty-one billion, four hundred million, five hundred thirty-two thousand, seven hundred thirty-one".